/Engine/Source/Runtime/Datasmith/CADKernel/Public/CADKernel/Topo/TopologicalEdge.h
It can be linked to the edge if :
bool IsLinkableTo ( const [FTopologicalEdge](API\Runtime\CADKernel\CADKernel\Topo\FTopologicalEdge) & Edge, double EdgeLengthTolerance ) const